Line-Follower-RP2350

Short and educational line follower project using the Raspberry Pi Pico 2 W platoform

Overview

This project is a line-following robot designed for speed and precision. It uses an 8-channel IR sensor module to detect a track and adjust movement accordingly. The Raspberry Pi Pico 2 W serves as the microcontroller, processing sensor data and controlling the motors via an L298N motor driver.

Features

• Autonomous Line Following: Uses an 8-channel IR sensor for accurate path tracking.
• Dual-Motor System: Two N-20 motors for controlled movement.
• Power Regulation: Step-down converter ensures stable voltage supply.
• Wireless Capability: Raspberry Pi Pico 2 W allows for remote debugging or expansion.

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Hardware List

Component	Quantity	Purpose
Raspberry Pi Pico 2 W	1	Main microcontroller
3.6V Batteries	2	Power source for motors and electronics
Battery Case	1	Holds and connects the batteries
L298 Motor Driver	1	Controls the motors
N-20 Motors	2	Provides movement
Step-Down Converter	1	Regulates voltage from batteries
Wheels	2	Attached to motors for movement
Ball Caster	1	Provides balance and smooth turning
Analog IR Sensors	3	Detects the track for navigation

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Wiring & Circuit Diagram

(You can include a circuit diagram here once finalized.)

Power Distribution:

• Batteries (2x3.6V) → Step-Down Converter → Provides 5V for Raspberry Pi Pico 2 W.
• Motors powered directly via the L298 motor driver.

Motor Control:

• L298N Motor Driver receives signals from the Pico 2 W to control the N-20 motors.

Sensor Input:

• The 3 Analog Sensors send position data to the Pico 2 W for line detection.

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Software & Code

• Written in MicroPython.
• Uses PWM for motor speed control.
• Implements basic PID control for improved tracking accuracy.

Full code will be available in the /src directory.

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Setup & Installation

1. Clone this repository:

   git clone https://github.com/billythetroller/line-follower-rp2350.git
   cd line-follower-rp2350

2. Flash MicroPython firmware on the Raspberry Pi Pico 2 W.
3. Upload the necessary Python scripts.
4. Assemble the circuit as per the wiring diagram.
5. Power up and start testing!

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Contributors

• Vasilis Charmanidis
• Giorgos Karampimperis
• Giannis Diplas
• Apostolis Kefalos

License

This project is licensed under the MIT License.